Home / 100,761.33-139,050.63-55,438.35

Finding the Fourth Proportional to 100,761.33, 139,050.63 and 55,438.35

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Solution

The fourth proportional to 100,761.33, 139,050.63 and 55,438.35 is: 76,504.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,761.33 : 139,050.63 = 55,438.35 : x
  2. Step 2: Convert to fraction form
    100,761.33/139,050.63 = 55,438.35/x
  3. Step 3: Cross multiply
    100,761.33x = 139,050.63 × 55,438.35
  4. Step 4: Simplify right side
    100,761.33x = 7,708,737,493.66
  5. Step 5: Solve for x
    x = 7,708,737,493.66/100,761.33
  6. Step 6: Final answer
    x = 76,504.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.